<div class="fixed-btn">
  <a class="go-top" href="javascript:void(0)" title="返回顶部" style="display: inline-block;"> <i class="fa fa-angle-up"></i></a>
  <a class="qrcode" href="javascript:void(0)" title="关注我们"><i class="fa fa-qrcode"></i></a>
  <!-- qrcode modal -->
  <div id="bottom-qrcode" class="modal panel-modal hide fade in" style="display: none;">
    <h4>微信关注</h4>
    <div class="panel-body"><img alt="微信关注" width="128" height="128" src="https://www.runoob.com/wp-content/themes/runoob/assets/images/qrcode.png"></div> 
  </div>
</div>